Cianferoni, F., and F. Ceccolini. “New Records of the Giant Dung Beetle Genus Heliocopris Hope, 1837 (Coleoptera, Scarabaeidae, Scarabaeinae)”. Journal of the Entomological Research Society, Vol. 22, no. 2, July 2020, pp. 125-9, http://www.entomol.org/journal/index.php/JERS/article/view/1753.